Cita APA (7a ed.)

O'Hara, V. (1990). The fitness option: Five weeks to healing stress (2nd ed.). Dawn.

Cita Chicago Style (17a ed.)

O'Hara, Valerie. The Fitness Option: Five Weeks to Healing Stress. 2nd ed. Nevada City, CA: Dawn, 1990.

Cita MLA (9a ed.)

O'Hara, Valerie. The Fitness Option: Five Weeks to Healing Stress. 2nd ed. Dawn, 1990.